{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:ZFUIQBS5VZJ5IOQNCNEXEVY4KY","short_pith_number":"pith:ZFUIQBS5","schema_version":"1.0","canonical_sha256":"c96888065dae53d43a0d134972571c563bab9000d8d057b575d5a810d7d608ff","source":{"kind":"arxiv","id":"2506.20318","version":2},"attestation_state":"computed","paper":{"title":"Computed tomography of propagating microwave photons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"quant-ph","authors_text":"Aarne Ker\\\"anen, Aashish Sah, Mikko M\\\"ott\\\"onen, Qi-Ming Chen","submitted_at":"2025-06-25T10:58:28Z","abstract_excerpt":"Propagating photons serve as essential links for distributing quantum information and entanglement across distant nodes. Knowledge of their Wigner functions not only enables their deployment as active information carriers but also provides error diagnostics when photons passively leak from a quantum processing unit. While well-established for standing waves, characterizing propagating microwave photons requires post-processing of room-temperature signals with excessive amplification noise. Here, we demonstrate amplification-free Wigner function tomography of propagating microwave photons using"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2506.20318","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-06-25T10:58:28Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"d5e22abd11ecdc4bfd96bb3a997e46f0db98222d6a6295f8b0e96ee00beae10c","abstract_canon_sha256":"0a5fb7aa8b60c8c4c8f72d53f1f2904b7447df8453e675dc38ba20bd6606273b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:30:45.295119Z","signature_b64":"ACx8M53iaO0oPqliSqjsFmMqAXYFaNX5cZXbGR1oRNZEVVcqoVRSolj7J+Tk+fH7mk9o/ZAwuzcBusl5YrZeCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c96888065dae53d43a0d134972571c563bab9000d8d057b575d5a810d7d608ff","last_reissued_at":"2026-07-05T11:30:45.294608Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:30:45.294608Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Computed tomography of propagating microwave photons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"quant-ph","authors_text":"Aarne Ker\\\"anen, Aashish Sah, Mikko M\\\"ott\\\"onen, Qi-Ming Chen","submitted_at":"2025-06-25T10:58:28Z","abstract_excerpt":"Propagating photons serve as essential links for distributing quantum information and entanglement across distant nodes. Knowledge of their Wigner functions not only enables their deployment as active information carriers but also provides error diagnostics when photons passively leak from a quantum processing unit. While well-established for standing waves, characterizing propagating microwave photons requires post-processing of room-temperature signals with excessive amplification noise. Here, we demonstrate amplification-free Wigner function tomography of propagating microwave photons using"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.20318","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2506.20318/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2506.20318","created_at":"2026-07-05T11:30:45.294672+00:00"},{"alias_kind":"arxiv_version","alias_value":"2506.20318v2","created_at":"2026-07-05T11:30:45.294672+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.20318","created_at":"2026-07-05T11:30:45.294672+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZFUIQBS5VZJ5","created_at":"2026-07-05T11:30:45.294672+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZFUIQBS5VZJ5IOQN","created_at":"2026-07-05T11:30:45.294672+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZFUIQBS5","created_at":"2026-07-05T11:30:45.294672+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ZFUIQBS5VZJ5IOQNCNEXEVY4KY","json":"https://pith.science/pith/ZFUIQBS5VZJ5IOQNCNEXEVY4KY.json","graph_json":"https://pith.science/api/pith-number/ZFUIQBS5VZJ5IOQNCNEXEVY4KY/graph.json","events_json":"https://pith.science/api/pith-number/ZFUIQBS5VZJ5IOQNCNEXEVY4KY/events.json","paper":"https://pith.science/paper/ZFUIQBS5"},"agent_actions":{"view_html":"https://pith.science/pith/ZFUIQBS5VZJ5IOQNCNEXEVY4KY","download_json":"https://pith.science/pith/ZFUIQBS5VZJ5IOQNCNEXEVY4KY.json","view_paper":"https://pith.science/paper/ZFUIQBS5","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2506.20318&json=true","fetch_graph":"https://pith.science/api/pith-number/ZFUIQBS5VZJ5IOQNCNEXEVY4KY/graph.json","fetch_events":"https://pith.science/api/pith-number/ZFUIQBS5VZJ5IOQNCNEXEVY4KY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZFUIQBS5VZJ5IOQNCNEXEVY4KY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZFUIQBS5VZJ5IOQNCNEXEVY4KY/action/storage_attestation","attest_author":"https://pith.science/pith/ZFUIQBS5VZJ5IOQNCNEXEVY4KY/action/author_attestation","sign_citation":"https://pith.science/pith/ZFUIQBS5VZJ5IOQNCNEXEVY4KY/action/citation_signature","submit_replication":"https://pith.science/pith/ZFUIQBS5VZJ5IOQNCNEXEVY4KY/action/replication_record"}},"created_at":"2026-07-05T11:30:45.294672+00:00","updated_at":"2026-07-05T11:30:45.294672+00:00"}